Home / 21,985.07-32,970.60-7,190.01

Finding the Fourth Proportional to 21,985.07, 32,970.60 and 7,190.01

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Solution

The fourth proportional to 21,985.07, 32,970.60 and 7,190.01 is: 10,782.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.07 : 32,970.60 = 7,190.01 : x
  2. Step 2: Convert to fraction form
    21,985.07/32,970.60 = 7,190.01/x
  3. Step 3: Cross multiply
    21,985.07x = 32,970.60 × 7,190.01
  4. Step 4: Simplify right side
    21,985.07x = 237,058,943.71
  5. Step 5: Solve for x
    x = 237,058,943.71/21,985.07
  6. Step 6: Final answer
    x = 10,782.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.